diff options
| author | Nate Diller <nate.diller@gmail.com> | 2007-05-09 02:35:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:56 -0700 |
| commit | f2fff596955867d407cc7e8e426097bd9ad2be9b (patch) | |
| tree | 68ca108b7eecef9d789fb7bf9eb2405854880575 /fs | |
| parent | 0c11d7a9e9e9793219baf715048c190a84bead57 (diff) | |
| download | linux-f2fff596955867d407cc7e8e426097bd9ad2be9b.tar.gz | |
reiserfs: use zero_user_page
Use zero_user_page() instead of open-coding it. Signed-off-by: Nate Diller <nate.diller@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/reiserfs/file.c | 39 | ||||
| -rw-r--r-- | fs/reiserfs/inode.c | 13 |
2 files changed, 13 insertions, 39 deletions
diff --git a/fs/reiserfs/file.c b/fs/reiserfs/file.c index ab45db529c80..9e451a68580f 100644 --- a/fs/reiserfs/file.c +++ b/fs/reiserfs/file.c @@ -1059,20 +1059,12 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode maping blocks, since there is none, so we just zero out remaining parts of first and last pages in write area (if needed) */ if ((pos & ~((loff_t) PAGE_CACHE_SIZE - 1)) > inode->i_size) { - if (from != 0) { /* First page needs to be partially zeroed */ - char *kaddr = kmap_atomic(prepared_pages[0], KM_USER0); - memset(kaddr, 0, from); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); - } - if (to != PAGE_CACHE_SIZE) { /* Last page needs to be partially zeroed */ - char *kaddr = - kmap_atomic(prepared_pages[num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, PAGE_CACHE_SIZE - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); - } + if (from != 0) /* First page needs to be partially zeroed */ + zero_user_page(prepared_pages[0], 0, from, KM_USER0); + + if (to != PAGE_CACHE_SIZE) /* Last page needs to be partially zeroed */ + zero_user_page(prepared_pages[num_pages-1], to, + PAGE_CACHE_SIZE - to, KM_USER0); /* Since all blocks are new - use already calculated value */ return blocks; @@ -1199,13 +1191,9 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages[0], - KM_USER0); - memset(kaddr + block_start, 0, - from - block_start); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[0]); + zero_user_page(prepared_pages[0], + block_start, + from - block_start, KM_USER0); set_buffer_uptodate(bh); } } @@ -1237,13 +1225,8 @@ static int reiserfs_prepare_file_region_for_write(struct inode *inode ll_rw_block(READ, 1, &bh); *wait_bh++ = bh; } else { /* Not mapped, zero it */ - char *kaddr = - kmap_atomic(prepared_pages - [num_pages - 1], - KM_USER0); - memset(kaddr + to, 0, block_end - to); - kunmap_atomic(kaddr, KM_USER0); - flush_dcache_page(prepared_pages[num_pages - 1]); + zero_user_page(prepared_pages[num_pages-1], + to, block_end - to, KM_USER0); set_buffer_uptodate(bh); } } diff --git a/fs/reiserfs/inode.c b/fs/reiserfs/inode.c index 9fcbfe316977..1272d11399fb 100644 --- a/fs/reiserfs/inode.c +++ b/fs/reiserfs/inode.c @@ -2148,13 +2148,8 @@ int reiserfs_truncate_file(struct inode *p_s_inode, int update_timestamps) length = offset & (blocksize - 1); /* if we are not on a block boundary */ if (length) { - char *kaddr; - length = blocksize - length; - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + offset, 0, length); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, offset, length, KM_USER0); if (buffer_mapped(bh) && bh->b_blocknr != 0) { mark_buffer_dirty(bh); } @@ -2370,7 +2365,6 @@ static int reiserfs_write_full_page(struct page *page, ** last byte in the file */ if (page->index >= end_index) { - char *kaddr; unsigned last_offset; last_offset = inode->i_size & (PAGE_CACHE_SIZE - 1); @@ -2379,10 +2373,7 @@ static int reiserfs_write_full_page(struct page *page, unlock_page(page); return 0; } - kaddr = kmap_atomic(page, KM_USER0); - memset(kaddr + last_offset, 0, PAGE_CACHE_SIZE - last_offset); - flush_dcache_page(page); - kunmap_atomic(kaddr, KM_USER0); + zero_user_page(page, last_offset, PAGE_CACHE_SIZE - last_offset, KM_USER0); } bh = head; block = page->index << (PAGE_CACHE_SHIFT - s->s_blocksize_bits); |